A secret hidden in centuries-old mud reveals a new way to save polluted rivers

Outlet: Science

Science: Although dams are not solely to blame for legacy sediment, it’s now clear colonial-era erosion did dramatically alter streams in much of the continent’s tectonically quiet eastern half, says Ellen Wohl, a geomorphologist at Colorado State University, Fort Collins. “There’s been an accelerated recognition of how ubiquitous this sediment is,” she says.